Update README.md

README.md

@@ -387,6 +387,8 @@ performance of any of your sites from across the globe.<br>
 
 <p>
 &nbsp;&nbsp;:small_orange_diamond: <a href="https://www.htbridge.com/mobile/"><b>ImmuniWeb® Mobile App Scanner</b></a> - test security and privacy of mobile apps (iOS & Android).<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://vulnerabilitytest.quixxi.com/"><b>Quixxi</b></a> - Free Mobile App Vulnerability Scanner for Android & iOS Apps.<br>
+&nbsp;&nbsp;:small_orange_diamond: <a href="https://www.ostorlab.co/scan/mobile/"><b>Ostorlab</b></a> - analyzes mobile application to identify vulnerabilities and potential weaknesses.<br>
 </p>
 
 #### Manuals/Howtos/Tutorials